Something went wrong on APP -unable to use cards for payments

Most of our payments are done via card transaction, after having breakfast at a restaurant my card declined , called the Std Bank call Centre and was told there is nothing they can do I will have to wait for at least 1-2hours for their technicians to resolve …it is 14:30 and still no progress . Can Standard Bank really be this useless . What is a person supposed to do in a situation like this !!! Worse service yet ! Will definitely be changing services providers !!